數(shù)據(jù)字典主要包括( )幾個部分
A.數(shù)據(jù)項、數(shù)據(jù)結(jié)構(gòu)、數(shù)據(jù)流、數(shù)據(jù)存儲、處理過程等
B.數(shù)據(jù)項、數(shù)據(jù)收集、數(shù)據(jù)流、數(shù)據(jù)驗證、數(shù)據(jù)保密等
C.數(shù)據(jù)項、數(shù)據(jù)收集、數(shù)據(jù)流、數(shù)據(jù)存儲、處理過程等
D.數(shù)據(jù)項、數(shù)據(jù)結(jié)構(gòu)、數(shù)據(jù)流、數(shù)據(jù)驗證、數(shù)據(jù)保密等